Character Description: Evangelion Unit 04

Evangelion Unit 04 was supposed to be a new advancement in Evangelion technology. As well has having the standard armament and armor of the other Evangelions, Unit 04 was also to have the Super Solenoid (or S-2) engine initially therioized by Misato Katsuragi's father, which was the same source of power the Angels used. This would have eliminated the need to have an external power umbilical, as well as emergency batteries.

However, it was not long after the completion of Unit 03 that NERV's second branch, located in the Nevada desert in the United States, was destroyed by Unit-04's S^2 engine collapsing. It converted all matter in the blast radious to pure energy, much like Unit-00 in episode 23, only that time it was unintentional. The second branch, Unit 04, the S-2 engine, and all the scientists were lost.

Unit 04 was the final production model under the control of the Dummy Plug system, and is believed to be similar to EVA Units 05 - 13, called the EVA Series.